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| Lithium AA/AAA Batteries for Use in Electronics |
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| PlainName:
--- Quote ---Would it be a good idea to use 1.2V NiMH batteries for delicate work and use 1 5V or 1.77V lithiums for jobs where more tool power is required? --- End quote --- You could, but you'd be better off with a tool with torque and speed control built in. A fixed-speed tool with low-power batteries is still going to start suddenly at full speed and rely on twisting in your hand for torque limiting. |
| Nusa:
--- Quote from: Boris_yo on November 27, 2021, 09:58:53 am --- --- Quote from: Nusa on November 20, 2021, 05:29:36 pm ---You can use any version of AA batteries you want in that device since there are literally no electronics in it, just a motor and switch contacts. The differences between battery chemistries will primarily be endurance. Torque will vary with battery voltage, but the motor is not fussy at running at slightly higher or lower voltages than the 6V nominal. --- End quote --- Why rechargeable NiMH batteries have voltage of 1.2V while alkalines have 1.5V? I measured AA lithiums recently with battery tester and while their specs say 1.5V I was surprised to see 1.77V. I noticed that I get more torque from screwdriver with higher voltage and flashlight shines brighter. I heard that using higher voltage batteries can damage equipment but like you said it depends per device? Would it be a good idea to use 1.2V NiMH batteries for delicate work and use 1 5V or 1.77V lithiums for jobs where more tool power is required? --- End quote --- You're overthinking it. It's not a precision device, it's a cheap convenience device. If you need delicate, stop before it's tight and do it manually. If you need power, stop when the tool stalls and do it manually. As for batteries, my generalization: NiMH: Pro-rechargeable con-lower voltage, self-discharges fast enough to be dead in less than a year (but you can recharge them) Alkaline: The baseline. Years of shelf life, assuming it doesn't decide to leak (main reason it's suggested not to leave batteries in tools long-term). Usually the most cost-effective. Primary Lithium: Higher initial voltage, but acceptable for your device. Pro- decades of shelf life and a more energy than most Alkalines. Con-more expensive All of them will lose voltage as they discharge, of course. Quality between brands will vary. Choose whatever works best for you. Personally, I tend to pull out a 12V or 18V drill driver (I have both) with rechargeable li-ion batteries for heavy or repetitive tasks. Delicate tasks I usually do manually from the start. |
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